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# Copyright (c) Meta Platforms, Inc. and affiliates.
#
# This source code is licensed under the MIT license found in the
# LICENSE file in the root directory of this source tree.
#
# pyre-strict
from libcst.codemod import CodemodTest
from libcst.codemod.commands.fix_variadic_callable import FixVariadicCallableCommmand
class TestFixVariadicCallableCommmand(CodemodTest):
TRANSFORM = FixVariadicCallableCommmand
def test_callable_typing(self) -> None:
before = """
from typing import Callable
x: Callable[[...], int] = ...
"""
after = """
from typing import Callable
x: Callable[..., int] = ...
"""
self.assertCodemod(before, after)
def test_callable_typing_alias(self) -> None:
before = """
import typing as t
x: t.Callable[[...], int] = ...
"""
after = """
import typing as t
x: t.Callable[..., int] = ...
"""
self.assertCodemod(before, after)
def test_callable_import_alias(self) -> None:
before = """
from typing import Callable as C
x: C[[...], int] = ...
"""
after = """
from typing import Callable as C
x: C[..., int] = ...
"""
self.assertCodemod(before, after)
def test_callable_with_optional(self) -> None:
before = """
from typing import Callable
def foo(bar: Optional[Callable[[...], int]]) -> Callable[[...], int]:
...
"""
after = """
from typing import Callable
def foo(bar: Optional[Callable[..., int]]) -> Callable[..., int]:
...
"""
self.assertCodemod(before, after)
def test_callable_with_arguments(self) -> None:
before = """
from typing import Callable
x: Callable[[int], int]
"""
after = """
from typing import Callable
x: Callable[[int], int]
"""
self.assertCodemod(before, after)
def test_callable_with_variadic_arguments(self) -> None:
before = """
from typing import Callable
x: Callable[[int, int, ...], int]
"""
after = """
from typing import Callable
x: Callable[[int, int, ...], int]
"""
self.assertCodemod(before, after)
def test_callable_no_arguments(self) -> None:
before = """
from typing import Callable
x: Callable
"""
after = """
from typing import Callable
x: Callable
"""
self.assertCodemod(before, after)
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